A 70-year-old female was referred to our department with complaints of bilateral lumbar sciatalgia. Lumbar CT was performed. Bilateral spondylolysis of L5 with secondary olisthesis had been previously surgically stabilised by anterior arthodesis. Ankylosis appeared effective at this level.
How to Cite:
Coulier B, Theodorescu M. Unusual vacuum phenomenon suggesting occult vertebral instability. JBR-BTR. 2010;93(5):273. DOI: http://doi.org/10.5334/jbr-btr.337